Circular building construction.



\ A. Y. CADDELL. CIRCULAR BUILDING CONSTRUCTION. APPLICATION FILED MAR- 26,1914- RENEWED FEB. 21,1916.

I 1 46,872. Patented Nov. 20, 1917.

2 SHEETSSHEE-T 2- fat UNITED STATES PATENT orrron- ALBERT Y. CADDELL, 0F WEEPING WATER, NEBRASKA.

CIRCULAR BUILDING CONSTRUCTIGN.

Specification of Letters Patent.

Patented Nov. 20, 1917.

Application filed March 26, 1914, Serial No. 827,345. Renewed February 21, 1916. Serial No. 79,800.

To all whom it may concern:

Be it known that I, ALBERT Y. CADDELL, a citizen of the United States, residing at Weeping Water, in the county of Cass and State of Nebraska, have invented certain new and useful Improvements in Circular Building Construction, of which the following is a specification.

This invention relates to an improvement in circular wall construction. While it is illustrated in connection with the building of silos, for which it is particularly adapted, it may be used to advantage for other structures. The invention consists of the novel construction, combination and arrangement of parts as described herein and claimed, and as illustrated in the drawing, wherein,

Figure 1 is a plan view illustrating the arrangement of the upright interlocking blocks or slabs and door frames. Figs. 2 and 3 are views showing, respectively, the outer and inner sides of one of the slabs. Figs. 4 and 5 are views showing, respectively, the two longitudinal edges of the superposed slabs, bands being added and shown in section. Fig. 6 is a partly broken, section view on line 6 6 of Fig. 7. Fig. 7 is a partly broken view of the interlocking superposed door frames, the bands therefor being broken away. Fig. 8 is a view in side elevation of a silo constructed in accordance with the invention, parts of the bands being broken away.

Referring now to the drawing for a more particular description, numeral 1 indicates a building block or rectangular slab, preferably having a transversely curved outer surface a, and reduced or rabbeted as at b at its upper end, upon its outer side a, thereby providing at its inner side the upwardly projecting flange c.

The lower ends of the slabs, upon their inner sides, are also reduced or rabbeted as at (Z, to provide, upon their curved sides, the downwardly projecting flanges e. Inthe drawings the bottom walls of the reductions b are shown to be inclined downwardly so that the oint will not retain moisture when the slabs are mounted one upon the other, the flanges e, as plainly shown in Figs. 4: and 5, being inclined outwardly so that they will engage the inclined walls of said recesses. While the preferred construction is to employ these inclinations, I do not wish to be understood as limiting myself to this feature.

Each block or slabis provided at its longitudinal edges, as best shown in Fig. 1, with project-ions'or ridges; the ridges at one of said'edges being indicated, respectively, at 2 and 8 to provide an intermediate groove 4, the ridges at its opposite longitudinal edge being indicated, respectively, at 5 and 6, to provide the intermediate groove 7 Rectangular, integral door frames are indicated at 8. They each have a length corresponding, preferably, to the length of a building block or slab. They are provided with ridges 2 and 3 to form, at one of their longitudinal edges, an intermediate groove 4, their opposite sides or edges being provided with parallel ridges 5 and 6' to form an intermediate groove 7 and as best shown in Fig. 6, they are provided, at their respective upper and lower ends with flanges c and e and with recesses b and d, and when the frames are disposed one upon another, flanges 0 will be disposed in recesses cl.

As best shown in Fig. 8, the slabs may be disposed to provide vertical sections, and arranged in horizontal courses, the joints of a superposed section being disposed midway between the ends of the slabs of an adjacent section. V

At 9 and 9 are respectively indicated bands or binding members, and it will be seen that when mounted on the silo they cover all of the transverse joints of the vertical sections. Bands 9 circumscribe the silo, and members 9 have their ends secured upon and midway between the ends of the doorways, by means of suitable keepers 10.

mong some of the advantages to be derived by use of the invention, it may be stated that the slabs may be constructed of cement, and a silo or other structure having a circular wall may be quickly built. On account of the interlocking longitudinal edges and transverse terminal flanges of the slabs which are provided, the door frames and wall are adapted to sustain stresses to advantage, the inclined walls of the recesses which receive the flanges tending to prevent accumulation of moisture.

Having explained the several parts, a further description relating to operation is not necessary.

What I claim and desire to secure by Letters Patent is,

In building-construction, a plurality of upright rectangular slabs having interlocking longitudinal edges of substantially Z- letter formation, said slabs having transversely curved outer surfaces, the upper ends of slabs being rabbeted upon their outwardly presented or facing surfaces providing upwardly projecting flanges upon their inner sides, the lower ends of said slabs being rabbeted or reduced upon their inner surfaces providing downwardly projecting flanges upon their outer curved sides, the bottom walls of the reduced or rabbeted upper end of said slabs being inclined downwardly and outwardly, and sectional encompassing binding members having ends of the intermediatesections secured upon and mid- 15 way between the ends ofdoorways and the other binding members circumscribing the structure at the transverse joints of said slabs.

In testimony whereof, I have affixed my 20 signature in presence of two Witnesses.

ALBERT Y. CADDELL.

Witnesses:

VHIRAM A. STURens, A. F. CLARK.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

